
1. 
EASY

Is 12 even or odd?

2. 
EASY

Is the sum of 3 and 8 even or odd?

3. 
EASY

Is 55 even or odd?

4. 
MEDIUM

Which number is not odd?

5. 
MEDIUM

If we add 1 to an even number, is the sum even or odd?

6. 
MEDIUM

If we add 1 to an odd number, is the sum even or odd?

7. 
MEDIUM

Which number is not even?

8. 
HARD

5 is odd and 9 is odd. Will their sum be even or odd?

9. 
HARD

6 is even and 8 is even. Will their sum be even or odd?

10. 
HARD

7 is odd and 4 is even. Will their sum be even or odd?

